11:45 AM - 12:00 PM
[17a-303-11] Search for ternary compound in Cs-X-I system
Keywords:material search, perovskite solar cell
Using first-principles calculation, ground state search in Cs-X-I ternary system has been performed in order to obtain lead-free candidate showing high photoelectric conversion efficiency. Evolutionary algorithm is employed to explore stable structures, which shows the lowest formation energy at each chemical composition. As a result, undiscovered ternary compound was found as a ground state, except for perovskite structure.